Fan filter



FIG. 1 is a front perspective view of the fan filter.

FIG. 2 us a rear perspective view of the fan filter.

FIG. 3 is a side elevational view of the fan filter, the opposite sidebeing a mirror image of that shown; and,

FIG. 4 a perspective view of the fan filter removed from the fan.

The broken line showing of environmental structure in FIGS. 1-3 is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for the “fan filter”, as shown and described.